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Principles of vid tech UNFINISHED
- 3. Television Standards: Analogue Systems
- 4. Frames - all the lines of definition Fields - the lines which are shown at any one time Horizontal resolution is limited by bandwidth; different places established different limits Interlacing - The system whereby only half of the lines are seen at a time (eg 1080i) Progressive - the system whereby all the lines are seen at once (eg 1080p) Television Standards: Analogue Systems
- 6. Television Standards: Component and Composite Video Signals ANALOGUE OPTIONS
- 7. DVI - Digital Video Interface HDMI - High Definition Multimedia Interface Television Standards: Component and Composite Video Signals What’s best - DVI or Composite or HDMI? VGA - Video Graphics Array (Analogue)
- 8. Television Standards: Component and Composite Video Signals HDMI DVI Digital Up to 1920*1200 Audio (8 channels) BluRay support Analogue or digital Up to 1920*1200 No audio No BluRay support
- 9. Television Standards: High Definition To put the 720 or 1080 lines into perspective, televisions of the past had 480 lines. Since more lines means a better picture then that alone shows why the HDTV has a nicer picture than an analog TV. More lines is nice but don't forget about the 'p' and 'i' in the 720p, 1080i and 1080p. The letter is an abbreviation for the type of scan the TV uses -- 'p' stands for progressive and 'i' stands for interlaced. Progressive scan is better than interlaced because it processes the images twice as fast. This faster scan rate produces better clarity and color in the on-screen picture. The difference between 720p and 1080i is minimal but the TV industry is using 720p more than 1080i. So, buying a 720p HDTV is recommended over a 1080i HDTV. As far as 1080p, there is no doubt that 1080p is the best resolution on the market. However, there is little to no difference in picture quality between a 1080p and 720p at the 32" and below screen size.
- 11. Television Standards: Aspect Ratio We can change aspect ratio using an ANAMORPHIC lens which basically squeezes the image.
- 12. Television Standards: Aspect Ratio
- 13. Broadcast Systems: Terrestrial, Digital, Satellite The basics of digital television
- 14. Broadcast Systems:Cable, Internet, On-demand